Hand drilling-machine



(No Model.) 2 Sheets-Sheet 1.

J. CHERNEY.

HAND DRILLING MACHINE.

Patented Apr. 17,1883..

ATTORNEYS.

N. Pilzns. Pmmumn nher. Wishingiom 11 c (No Model.) 7 2 Sheets-Sheet 2.J. CHERNEY.

HAND DRILLING MACHINE. No. 275,885; Patented Apr. 17,1883.

INVENTOR ATTORNEYS.

UNITED STATES PATENT FFICE...

J AOOB OHERNEY, OF DENVER, COLORADO.

HAND DRILLING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 275,885, dated April17, 1883.

Application filed June 30, 1882. (No model.)

To all whom it may concern Be it known that I, JAooB CHERNEY, of

Denver, in the county of Arapahoe and State of Colorado, have invented anew and Improved Hand Drilling-Machine, of which the following is afull, clear, and exact description.

' My invention relates to improvements in hand drilling-machines; and itconsists in the peculiar construction and arran gementof parts, ashereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional elevation of my new hand drilling device placedupon the screw column or bar F in horizontal position for drilling avertical hole. Fig. 2 is a plan view of the device, showing one of thehinged arms N open for removing the drill-holder, for removing the drillfrom the hole,for changing the drill, or for clearingtheholeofsand.Fig.3isafrontelevation of the fulcrum-plate D, in which the jointedlever G is fulcrumed. Fig.4 is a sectional plan view of the rubberpacking E, placed in the drill-holder B for holding the drill. Fig. 5 isa perspective view of theclamp-plate to be placed in the yoke G forclamping the device to the said column or bar F. Fig. 6 is a sideelevation of the device held in vertical position upon the column or barfor drilling a horizontal hole. Fig. 7 is a sectional elevation taken onthe line :20 0c of Fig. 6; and Fig.8 is a detailed elevation, showingthe jointed lever 0 arranged for operating the device by the 'foot.

In Fig.6 the lever is shown arranged for operating the device by the legor knee of the driller.

The operative parts of the device are attached to the casting A, whichis formed with the sleeve a, in which the drill-holder B, which holdsthe drill J ,is placed, and with the shank a, which passes through theyoke G. This yoke G is placed upon the screw-column or other bar or rod,F, which is adaptedto be fixed in the walls ofthe mine, or otherwiseheld firm, and is made fast thereto by means of the clamp-plates H and Hand the set-screw h, as shown in Figs. 1 and 6, and the casting A isheld and made adjustable in the yoke for setting the drill at diiferentpositions by means of the set-screw I), which passes through the alsomade up of sections, as shown in Fig. 4-.

that is, of the larger part g, which is held in the section f of theholder, and the strip or section 9, which is secured by screws or othersuitable means to the inner face of the section f of the holder. Whenthe slidef and packing 9 are removed, the drill J may be put in place inthe drill-holder, and the drill will be held by the compression of therubber packing with suflicient firmness to cause the drill to be raisedand turned when the holder is raised and turned, and forced home to thebottom of the hole being drilled when the holder is moved downward orforward. This packing also permits the drill to have a slight lateralmovement to accommodate the jar and deflection of the drill in case theblow from the sledge is notdelivered true upon the drill. Thedrillholder B is raised and lowered (or forced backward and forwardhorizontally, as the case may be) by means of the foot or knee on thelever O, to the forward end of which lever it is attached by means ofthe pins 121) of the arms N N, which close under the collar P of theholder, and is revolved by means of this lever and the inclined slottedarm K, bolted to the sleeve 0, and the pawl-ring L, the pawl l of whichengages with the teeth of the collared ratchet-wheel M, secured upon thedrill-holder. The pawl-ring is placed loosely upon the collaredratchet-wheel M, as shown in Fig. 1, and is formed with the pin or studk, which fits in the slot of the arm K, so that the arm K, being boltedfast to the side of the sleeve 0, acts as a cam to the stud andpawl-ring, causing the ring to partially rotate upon the collaredratchet-wheel M as the holder B is reciprocated, thus causing the pawl lto give the said ratchet-wheel and the drill-holder and the drillpartial axial rotation at each upward movement of the drill-holder.

The lever O is fulcrnmed in the plate I), bolted to the outer end of theshank a, and is jointed, as above mentionedthat is, made up be operatedeither by the knee or foot of the operator.

When the device is arranged upon the column F so as to hold the drillperpendicular, or nearly so, the section a will be dropped down, asshown in Fig. 8,-for operating the device by the foot, the attachment jbeing arranged to form a stirrup to receive the foot, as illustrated insaid figure; but when the device is arranged upon the column to hold thedrill in horizontal position, as shown in Fig. 6, this section 0 will bebolted to the end of the section (I, in line therewith, to serve as anextension of the lever, to adapt the lever to be attached by means ofthe attachment 3" to the leg of the driller, so that he may convenientlyreciprocate the lever backward and forward horizontally, between theblows delivered by the sledge, by a slight backward, and forwardmovement of the leg or knee. When the lever O is operated by the foot ofthe driller, the sections 0 and cl are of course reciprocated verticallyin thefulcrum-plate D. This reciprocating movement of the leverCimparts, as above mentioned, reciprocating movement to the drill-holderthrough the arms N N, which are in this construction hinged to theforward end of the section 0 of the lever, as shown clearly in Fig. 2,so that by swinging these arms outward away from the sides of thesection 0 by removing the bolts 8 s and loosening the bolts 8 s, whichhold the arms N N to the sides of the section 0, the drill-holder B maybe removed from the sleeve a and the drill removed from the hole beingdrilled in the rock for clearing the hole of sand.

The collar 1? is screwed upon the upper end of the drill-holder B, asshown in Fig. 1, and is milled out on its inner periphery, as shown att, Fig. 2, so that by turning the collar until the milled portion comesin line with the sectionf of the cylinder this section may be withdrawnfor removing and replacing the drill withoutcntirely rcmovin g thecollar, and when the said collar is screwed to place and turned so thatthe milled-out part t comes out of line with the section f the saidsection will be securely locked in place by the collar, as will beclearly understood from Fig. 1. a

The section a of the lever (l is formed with a series of holes, a, sothat the lever may be adjusted in the fulcrum-plate D to correspond withany adjustment of the shank a of the casting A in the yoke G, and thesection d of the lever is formed with the series of holes d, so thatwhen the device is operated by the foot the section 0 may be movednearer to or farther away from the fulcrum-plate D to increase ordiminish the vertical movement of the drill-holder B, as required, andby this means, when the device is operated by the leg of the driller,the lever may be shortened or lengthened, as desired.

The distance of rotation of the pawl-ring L at each movement of thedrill-holder B may be regulated by increasing or diminishing the slantof the plate K, and thus thedistance of rotation of the drill betweeneach blow may always be regulated to suit the quality of rock beingdrilled.

The clamp-plates H and H have considerable room in the yoke G, as shownclearly in Figs. 1 and 6, and by this means the deviceis made universal,or adapted to axial adjustment upon the screw column or rod F, so thatit may be turned to several angles upon the column and held for actionto bring the drill to the desired position for drilling the hole.

The rubber packing E is by preference made soas to form the ribs uponthe inside, as shown in Fig. 4, so that the rubber will not muchinterfere with the downward thrust of the drill when struck by thesledge.

A treadle centrally fulcrumed to a suitable base may be connected to theend of lever-section 6 to substitute the stirrupj, Fig. 8, if desired.

It will also be understood that both horizontal and vertical holes, orholes at any intermediate angle, may be drilled, using the jointed'leverO, adjusted with either the foot or leg connectionj orj.

Thus constructed the device is adapted to hold the drill in any desiredposition, is easily operated, and enables one man to easily accomplishthe whole work of hand-drilling, thus saving the labor and time of thehelper.

1 am aware that a loose ring or collar provided with studs working inslots of a baseplate, and with a pawl engaging the ratchetteeth of afixed ring, has heretofore been employed, and I therefore do not claimsuch invention.

Having thus fully described my invention, whatIclaim as new, anddesireto secure byLetters Patent, is-

1. In a hand-drill, the combination, with the collar 1?, having themilled portion t, of the drill-holder B, consisting of the two partsff,the part f being provided with tongues on its edges, fitting intocorresponding grooves of the part f, substantially as herein shown anddescribed, whereby the drill can be removed without removing the collar,as set forth.

. 2. In a hand-drill, the combination, with the collar E, having themilled portion t, of the drill-holder B, consisting of the two partsff,the part f being removable, and the packing E, composed of two parts, g9, corresponding to the parts of the holder, substantially as hereinshown and described, whereby the section f of the holder and the sectiong of the packing can be removed without removing the 4. The combination,with the casting A, the

IIO

TIS

drill-holder B, provided with the collar 1 and the loose ring L,provided with the stud k, of the lever (J, the pivoted arms N N,engaging with the collar of the holder, and the slotted arm K,substantially as and for the purpose set forth.

5. The combination, with the drill-holder B, provided with theratchet-wheel M and the oollarP, of the loose ring L, provided with thestud k and the pawl l, the slotted arm K, and the pivoted arms N of thelever (l, engaging with the collar of the holder, substantially as andfor the purpose set forth.

6. The combination, with the drill-holder B, the sleeve to, the shank a,and the yoke G, of

7. The lever 0, consisting of the sections 0 20 d e, the sections 0 dbeing provided with holes c d, in combination with drillholder andmeans, substantially as herein shown and described, for operating thedrill-holder, as set forth.

JACOB OHEBNEY.

Witnesses:

P. W. TERRY,

H. STARKWEATHER.

